SJW = hipster in the fashion that it's a term used an insult to toss at "those not like me", in this case typically due to views on feminism and trans issues, amongst other similar topics. This was a term typically applied to those within a cadre of people who take a militant stance about social justice issues, typically far and away on the fringe, politically.
The cabal? There's only so many people who can or want to moderate, power unregulated has a proclivity to become concentrated, and in a environment of too much information, lines get drawn connecting dots that form a much more complex constellation of a story than the simple version that is often more likely to be true.
To me personally, it feels more like a manifestation of blowback from progressive political and social topics that have been taking place on and offline by people ideologically opposed to their aims. Caught up in that are those that have questions about these aims and their nature from a place of sincere curiosity, but some zealous progressives can be a bit, uh, heavy-handed and extremely conflict-oriented with the feedback, and this doesn't lead to conducive conversation. Therefore, the opposing side seems more reasonable and somewhat resembles the world we live in, although on the fringes there are some nasty fascistic tendencies.
1 tbsp extreme social conservative
3 cups those caught in the middle who are paying attention more to polemics and adherence to a narrative that assists their worldview
add all ingredients to a pressure cooker that resembles the proper environment for some permutation of "free speech"
Toss in one M60 of a conspiracy-minded weirdo, seal lid and turn up heat to a point where some will claim that the pressure cooker can't handle it and will collapse in on itself or explode violently
Hide until the popcorn comes bursting out of the pressure cooker
Add salt and enjoy your popcorn.